x86-64

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Different alignment of long doubles in a struct on 64 bit linux with gcc and clang
user_60686130
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3
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111
x86-64 memory-alignment gcc linux c
Why does ptrace show a 32-bit execve system call having EAX = 59, the 64-bit call number? How do 32-bit system calls work on x86-64?
user_177612850
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3
1
187
ptrace x86-64 system-calls 32bit-64bit linux
Most insanely fastest way to convert 9 char digits into an int or unsigned int
user_128929370
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5
3
567
x86-64 sse assembly optimization c++
Why does Xcode build for arm64 even when excluded?
user_610720
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4
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324
arm64 x86-64 xcode build ios
What is the allowed range for offsets in for example LEA RAX, [RBX+off]
user_76048260
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1
1
67
addressing-mode x86-64 assembly
Why left shift instruction has two names (SAL and SHL) in x86-64 ISA?
user_174658760
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4
2
275
mnemonics instructions x86-64 instruction-set assembly
sequence of SSE instructions for a conditional expression
user_176658070
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2
1
106
x86-64 sse assembly c
Assembly why is "lea eax, [eax + eax*const]; shl eax, eax, const;" combined faster than "imul eax, eax, const" according to gcc -O2?
user_128929370
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6
2
392
x86-64 assembly cpu-architecture optimization c
Having trouble determining the return value in assembly language
user_163330920
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2
2
117
x86-64 assembly c
Cannot mmap after switching to 64 bit mode in a Linux user-space process that started as 32-bit
user_85823630
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2
0
114
x86-64 system-calls 32bit-64bit x86 linux
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